ES1686DC-R2-2142IT-128G

Ensure uninterrupted mission-critical business operations with the high-availability ES1686dc R2 NAS. With redundant controllers and power supplies, it minimizes downtime, allowing seamless component replacement without disruption, ensuring reliability and continuity for enterprises.

Intel® Xeon® D processors bring high performance and efficiency
Powered by two Intel® Xeon® D processors, the ES1686dc R2 features a dual active-active controller architecture that provides failover/failback operations as the standby controller takes over if one controller breaks down.

PCIe Gen 3 slots
The ES1686dc R2 provides two PCIe Gen 3 x8 slots per controller connected to the CPU, allowing you to add additional functionality to meet growing workload and business requirements.

Petabyte-scale, dual-controller SAS storage expansion
Gain petabyte-scale storage capacity using the QNAP’s expansion enclosure. Dual-channel (dual-path) connections allow service continuity even if one node fails.

QES: ZFS-based OS designed for HA systems
The ES1686dc R2 uses the QES operating system, which is based on the simple and efficient FreeBSD kernel and the ZFS file system that is suitable for high-end enterprise applications.

Self-healing ensures data integrity and reliability
Designed to ensure data integrity, the QES-based ES1686dc R2 uses end-to-end checksums to detect and correct silent data corruption caused by hardware defects, firmware bugs or metadata errors. If integrity violations are detected, QES automatically repairs the damage using data from the other mirror before the data is passed to applications.

Unleashed SSD potential – agile and cost-effective for the ultimate performance
QES 2.2 features QNAP’s exclusive Write Coalescing algorithm that further optimizes all-flash performance in ZFS, providing a highly cost-effective all-flash solution for enterprise data management and mission-critical services.

Deduplication and compression maximizes VDI storage performance
In VDI environments where there could be over 90% duplicate data from virtual desktop OS images and applications, the QES-powered ES1686dc R2 provides businesses with the most cost-effective remote virtual desktop platform and mission-critical information warehousing.

Real-time SnapSync ensures minimal RPO with real-time disaster recovery
Real-time SnapSync ensures that both the primary and secondary NAS maintain identical data. When data is written to the source, it is immediately written to the destination. If the primary NAS goes offline, IT staff can simply adjust the privilege settings of the secondary NAS to ensure continuous operations. SnapSync provides the strongest support for nonstop business operations and helps users to reduce the risk of data loss.

Business Continuity
Copy-on-write technology makes QES snapshot creation almost instantaneous without affecting ongoing data writes. SnapSync supports incremental backups, real-time deduplication, and compression. The source ES1686dc R2 performs deduplication before compressing the metadata to reduce synchronized data and save bandwidth.

Compatible with VMware, Microsoft and Citrix virtualization
The ES1686dc R2 supports VMware® vSphere®, Windows Server®, and Citrix XenServer® for flexible deployment and management in virtualization environments.

Reliable, high-performance storage for virtualization
The ES1686dc R2 supports block-based iSCSI LUN as a reliable, high-performance, and affordable storage solution for mainstream virtualization environments. It supports VMware® VAAI and Microsoft® ODX to increase performance by offloading server loading for ESXi server and Hyper-V respectively.


Supports iSER for Improved VM Performance
The ES1686dc R2 supports iSER, combining iSCSI and RDMA (Remote Direct Memory Access), which can bypass general network drivers, the socket layer, and to directly enter memory buffers of the server and storage. Response time is also reduced to ensure service quality of the NAS.

Build an affordable Fibre Channel SAN environment
Common Fibre Channel Storage Area Networks (SAN) devices are often costly. By installing QNAP dual-port 16Gb/32Gb Fibre Channel expansion cards in the ES1686dc R2, you have more budget-friendly options to add a NAS to a SAN environment. You can set a Fibre Channel Target using the iSCSI & Fibre Channel app. Moreover, the LUN Masking and Port Binding features provide an additional layer of data security.

QNAP ES1686dc R2. Type: NAS. Chassis type: Rack (3U). Device class: Large Enterprise Business. Processor family: Intel® Xeon® D, Processor model: D-2142IT, Processor frequency: 1.9 GHz. Internal memory: 64 GB, Internal memory type: DDR4. Total installed storage capacity: 0 TB. Operating system installed: QNAP QES

Storage drives installed	No
Total installed storage capacity	0 TB
Number of storage drives installed	0
Number of storage drives supported	16
Installed storage drive type	No
Supported storage drive types	HDD & SSD
Storage drive capacity	0 GB
RAID support	Yes
Supported storage drive interfaces	Serial Attached SCSI (SAS)
Storage drive sizes supported	2.5,3.5"
RAID levels	0, 1, 5, 6, 10, 50, 60
Online RAID migration	Yes
Online RAID expansion	Yes
Hot-swap drive bays	Yes
Processor family	Intel® Xeon® D
Processor manufacturer	Intel
Processor model	D-2142IT
Processor frequency	1.9 GHz
Processor boost frequency	3 GHz
Processor cores	8
Internal memory	64 GB
Internal memory type	DDR4
Maximum RAM supported	512 GB
Memory slots	8
Memory form factor	RDIMM/LRDIMM
ECC	Yes
Flash memory	4000 MB
Ethernet LAN	Yes
Ethernet LAN data rates	10,100,1000 Mbit/s
Jumbo frames support	Yes
iSCSI support	Yes
Supported network protocols	CIFS/SMB2/SMB3, NFS v3/NFS v4.1, FTP, FTPS, TFTP, HTTP, HTTPS, SSH, iSCSI, Fibre Channel, SNMP, SMTP, SMSC
Ethernet LAN (RJ-45) ports	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Fiber ports quantity	4
Fiber optic connector	SFP+
PCI Express x8 (Gen 3.x) slots	2
Chassis type	Rack (3U)
Cooling type	Active
Product color	Black, Gray
Number of fans	2 fan(s)
Fan diameter	2.36" (6 cm)
Fan diameter 2	2.36" (6 cm)
LED indicators	Yes
Type	NAS
Device class	Large Enterprise Business
Backup function	Yes
Buzzer	Yes
Multilingual support	Yes
Access Control List (ACL)	Yes
Reset button	Yes
On/off switch	Yes
Hot spare	Yes
S.M.A.R.T. support	Yes
Operating system installed	QNAP QES
Power supply location	Built-in
Power supply unit (PSU) capacity	700 W
Number of power supply units	1
Redundant power supply (RPS) support	Yes
Power consumption (typical)	500.87 W
AC input voltage	90-264 V
Fan voltage	12 V
Width	17.6" (446.2 mm)
Depth	23.1" (587.8 mm)
Height	5.2" (132 mm)
Cables included	AC, LAN (RJ-45), RS-232
Power cables quantity	2
Rack mount kit	Yes
Number of screws	64
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	5 - 95%
Storage temperature (T-T)	-20 - 70 °C